[Snort-users] Re; Flex-Response, anyone using it?

James Riden j.riden at ...11179...
Wed May 19 15:00:05 EDT 2004


Richard Bejtlich <taosecurity at ...11827...> writes:

> Dusty Hall wrote:
>
> I'm curious to know how many people, if any, are using Flex-Response and
> what kind of results they have seen?

Like this?

alert tcp $HOME_NET any -> $HOME_NET 9996 ( msg: "Sasser Transfer (internal) up.exe"; content: "|5F75702E657865|"; depth: 250; flags: A+; classtype: attempted-admin; resp:rst_snd,rst_rcv; sid: 1013252; rev: 1;)
alert tcp $HOME_NET any -> $HOME_NET 5554 ( msg: "Sasser Transfer FTP"; content: "RETR"; flow:to_server,established; flags:A+; classtype: attempted-admin; resp:rst_snd,rst_rcv; sid: 1013253; rev: 1;)

Possibly made the difference and kept one of our routers up during
that particular incident, but I can't say for definite - too many
other variables.

(someone else's sig - can't remember who, but thank you)
-- 
James Riden / j.riden at ...11179... / Systems Security Engineer
Information Technology Services, Massey University, NZ.
GPG public key available at: http://www.massey.ac.nz/~jriden/





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